Dry-pipe valve.



PATENTED MAR. 25;, 1808. 88.88888 l -DRY PIPE VALVE. APPLICATON FILED APB.29,197.

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' Nq. 832,669. PATENTE!) MAR. 24, 1908.A

1.. E. PAGAN. DRY PIPE VALVB; APPLLUATIQN PILED .911.529.1901

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No.l 882,659.

PATENTED MAR.|24, 1908. .L. E. PAGAN. 'DRYVPI'PE VALVE.v APPLICATION FILED APR.2'9.1907.

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PATBNTED MAR. 24, 1908.`

"L. E. PAGAN." URY PIPE VALVE. APPL/faulen FILED APB. ze. 1907.

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UNrrED sri-iras LEWIS E. FAGAN, MINNEAPOLIS, MINNESOTA.

DRY-PIPE VALVE. l

Appucaumfueaapiaa1907. yserial 1ro/370,806."

extinguisher systems, and particularly tothe mechanisms em loyed therein known as drypipe valves. he purpose 'of 'such valve mechanisms is .to prevent the admission of' water into the distribu tingl system by maintaining therein sufficient air pressure to hold the valves on their seats until a sprinkler head is opened andallows'the air to escape, thereby reducing the air pressure and per-` mitting the Water pressure to unseat ythe valve-31d the Water to flow into the dis tributing system. A

The objects sought by this invention are to .accelerate the entrance of the Water into the distributing-system by providing a valve mechanism that will operate with a low air ressure to keep the systemclosed, regardi esso'f thepressure of the water maintained v valve against being tripped by excessive.

in the supply system; and to insure the water pressure caused by water-hammer, Without" carr ing such high air pressure as would 'retar the action of the valve and delay the entry of the Water into the dis My improvements are illustratedv in the accompanying drawings, in Which- Figure 1. is a longitudinal section of the .valve with the front casing cut away, show# ing the valve in its closed position; Fig. 2is

also. a longitudinal section of the valve, on

the line A-A oflFig. 1; Fig. 3 is a section of- 'thevalvefsimar--to Fig. 1, showing the valve l in the opened position;v Fighe is ahorlzontal sf'a'ctigorrofithel valve on the line B--B of Fig.

line'iC-JU ofiFig. 1, withl ythe.coverplateg-i 5 1; 'and 'Eigf is a horizontal section on the E furcated strutjB', 'lower et geofwhioh seats o n the Weight""annii 33.@ 'Ehe 'upper 100 and 6 removed: v

'In the' drawings 1 `designa,tes the valve case y" 22, v*the wjalfll f .separating I the tumbler cha' lber-1U rom-the-air-valve.chamber 1 1;

.13;"the'wagl'l separating the'air-valve chamber 11'. from the=waterv=alvechamber 12 4, the Waterfvalve chamber cover; 5 the alrvalve Specification of Letters Patent. f

v chamber cover;

PATENT 'emisionv rateneednamh 2.4, 190B.

6, vthe tumbler-chamber cover 7'-, the auxiliary-air valve body. cured tothe valve body 'Las shown 1n the drawings; 8, the auxiliary-air valve cover; and 9, the auxiliary-air valve chamber.

The water. entrance to the casing is through the` port 13, and the exit to'the dis- 60 tributing system is' through thev port 14. The water-valve is arranged onthe port 13 and the air-valve on an opening in'the partition 3, A 'second opening 1.5 in the partition is provided for'themovement of the strut 29 A65 hereafter referred to.

The air-valve19 rests on a seat 2O to close the part 21 and it is .pivotally connected'by.

a pin 18 to a yoke '17 which in turn is hinged to the casing by a pintle 16. By this ar- 70 rangement the valve is adapted to swing by the water pressure from the position shown 1n Figs. 1 and 2 to that shown in Fig 3.

A valve-seat 22 is provided for the porti-3, on which rests the valve 23. A screw-cap 24 75 on the valve secures an ,adjusting-screw 25' which engages a `compression lever 26,' and 'the latter has trunnions' by means of which it is hinged toI standards 27 that are secured.

vto the bottom of the casinggl. -This con-A 80l struction permits the valve and its connec' tions to swing from the positionshownin Figs. 1 and 2 to that shown in Fig. 3.

The valve 23 is held to its seat by means of the strut '29, the lower end of which bea1s` .85

on the lever 26 and the upper end of which is engaged by 'a lever 31 in the chamber 10. The strut is guided in its movements and prevented from being thrownout of position by 'guides 28 and by the Walls'of the opening 15. 90

The .lever 31 is `iulcrumed t'o brackets 30 lon theinner wall ofthe chamber '.10. A lweight 32' is 'provided with a' l'owe'r lateral arm 33, which the upturned narrow end 'of the` lever.' 31 engages, 'and `ari'npper lateral 9.5

arni34 having a transverse hole ne'arfits enr-l.. A pair of han ersv 35 is secured-tothetop of the Casing an( from them 1s sus ended a-bi.-

has a conical' point thate'ngagesfin-'a c or- 105- rcsponfling socket in the lower' end of a pin that extendsdownwardly from theiaux I 44;.and

iliary-airvalve40. This valve also has a pin` 41 that projects upward into a guideooket 42 formed in the cover 8 ofthe aux -iliary air-valve easing. In the latter easing vis an'openingAB for connection with; the air system, er distributing system; ini the wall of the'ehai'nber 1 1 is the draw-oli opening inthe Wall of the chamber 1.2 is the opening V45 for connection with an alarm systerny In practice, the caps 4 and 6 are removed,

the" air-valve.auxiliary-valve, l and watervalve are seated on their respective seats;

ance the pressure exerted on weight descends,

points ofthe lever 3l and strut 36, and there-4 l Ward and thus liftingithe va Y seat.A 1The downward and unobstructed passage and air pressure is then put on the distributing-system and maintained to eounterbalthe under side of the auxiliary-air valve 4() by the weight 32. The triggermiechanism is then interposed between the auxiliary-air valve 4l() and the compression-lever 26, `as shown in Fig. 1, and the caps 4 and 6 are then replaced. As soon as 'the sprinkler-head is opened the air in the distributing-,system escapes and' the p ressure n the auxiliary-an valve is released.

pon'sueli release of pressure, there no longer being pressure on the weight-arm 34, the roeking on the contact the arm ,34 and the strut 38 up by Swinging ive 4e a 3i and in' doing so .compression rush' g 19 to swing to one side,

L12-will be transmitted to' the alarm-system,

"through the `port 45, to operate the alarm the moment'the `valve is opened.

Having described' my invention, claim and desire to seeureby lietters 4Patent is-d i. In, adry-pipe valve, a easing providing- `main chambers, a supplemental chamber and an .auxiliary air-elnilnlmr, air and water valves in the main elramhers, a v alve in 4the auxiliary chamber having' a stem extending into the supplemental chamber, astrut `extending from the water-valve into the substantially as set l'orth.

latter:'cllalnlicr, and a tiagger mechanism eonnecting said `stem and strut and comprising:I a lever, a pivoted strut, and a weight `provided with .a pail; of' arms and a strut,

arms and a strut, substantially as its thereby free-the latter. I

the strut 29 will 'liftitj,"

main chambers, a supplemental .5 and an auxiliarynir-chamlie-r, air what l 2. in al {h ypipe valve, a trig 'er meel-ianism o omprising a lever, a pivote strut, a dependingswinging strut, and a Weight provided with a pair of arms and 'a strut substantially as set forth. 'y

3. In a dry-pipe valve, a trigger mechan-v ism, comprising a lever fulerurned to the easing, a swinging strut de endn from the casing, a free Weight provi ed Wit i a air of arms and a strut, substantially as set orth.

4. In a dry-pipe valve, a trigger mechanism, comprising va lever fulcrurned to the easing, a swinging strut depending from the casing, a free weight having an arm for engaging said strut and lever and another arm provided with aY pivoted strut, substantially as set forth.

5. In a dry-pipe valve, the combination with a str ut lor the water-valve and the stern pf an auxiliary air-valve, of a trigger mechanisin comprising a lever fulerumed to the casing, a swinging strut depending from the easing, a free weight provided with a pair of set forth. 6. Ina dry-pipe valve, the combination with a strut for the Water-valve and the stem ol" an auxiliary air-valve, of a trigger meehanism. comprising a lever fulcrumed to the easing, a swinging. strut depending from the easing, a free weight having a. lower arm for `engagingthe laf/e strut and said lever, and

an upper arm'prnvidedwith a pivoted vstrut 4ler engaging said valve stem, substantially as set forth.

7. ln a drypipe valve, aA easing providing main' chambers., a supplemental chamber.

and an auxiliary. air-cliainber, ali' and Water valves in the mani eliamhers,

strut in place, a valve for the auxiliary chamber, a stein therefor, a pi yoted strut in the supplemental chamber, and a weight proset lorth.

8. in a dry-pipe valve, a easing providing chamber and Water valves in the main chambers, a strut for holding the water valve to its seat, a lever in the supplemental chamber-lor holding` the strut in place, a valve for the auxiliary chamber, a stem therefor, and tripping dea vices operativelyr connecting said stern with said lever, and. comprisingr a swinging strut dependingfrom the easing, a free weight irovided with a pair ol arms and a strut, substantially as set l'orth;

l).- ln a dry/pipe valve, aeasng providing main chambers and a snpplen'iental cha-m# her, an .air-valve and a watei--valve in the former and a trippingl moehanism' in the latter `che r'nher, con'iprising a -a strut for holding the water-valve to its seat, a lever in the supplemental chamher'l'or holding the vided with arms and a strut, substantially as lever, a pivoted.,

\ strut; and 2iy Weight provicledv with a pair of 'name to this speciiication in the presencek of "'arms'and a' strut, a strut for connecting the i two subscribing Witnesses this 25th day of Water-valve with the tripping mechanism, April, l1907.

angl an auxiliary air-valve coniiected with the` y LEVIS E. FAGN. trigger mechanism for controlling itsoper- Witnesses: Miou,- substantially as set forth. P. H. GUNCKEL,

`Iii ,testimony whereof I have signed my H. A. BOWMAN. 

